# git rev-parse -q --verify 4b058c9f281f5b100efbf665dd5a1a05e1654d6d^{commit}
4b058c9f281f5b100efbf665dd5a1a05e1654d6d
already have revision, skipping fetch
# git checkout -q -f -B kisskb 4b058c9f281f5b100efbf665dd5a1a05e1654d6d
# git clean -qxdf
# < git log -1
# commit 4b058c9f281f5b100efbf665dd5a1a05e1654d6d
# Author: Jason A. Donenfeld <Jason@zx2c4.com>
# Date:   Wed Sep 25 19:50:22 2024 +0200
# 
#     powerpc/vdso: allow r30 in vDSO code generation of getrandom
#     
#     For gettimeofday, -ffixed-r30 was passed to work around a bug in Go
#     code, where the vDSO trampoline forgot to save and restore this register
#     across function calls. But Go requires a different trampoline for every
#     call, and there's no reason that new Go code needs to be broken and add
#     more bugs. So remove -ffixed-r30 for getrandom.
#     
#     Fixes: 8072b39c3a75 ("powerpc/vdso: Wire up getrandom() vDSO implementation on VDSO64")
#     Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://msgid.link/20240925175021.1526936-2-Jason@zx2c4.com
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version
# < git log --format=%s --max-count=1 4b058c9f281f5b100efbf665dd5a1a05e1654d6d
# make -s -j 40 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mpc85xx_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  mpc85xx_defconfig
Using /kisskb/src/arch/powerpc/configs/mpc85xx_base.config as base
Merging /kisskb/src/arch/powerpc/configs/85xx-32bit.config
Merging /kisskb/src/arch/powerpc/configs/85xx-hw.config
Merging /kisskb/src/arch/powerpc/configs/fsl-emb-nonhw.config
#
# merged configuration written to .config (needs make)
#
# < make -s -j 40 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mpc85xx_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 40 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mpc85xx_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
# make -s -j 40 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mpc85xx_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
Segmentation fault (core dumped)
make[3]: *** [/kisskb/src/scripts/Makefile.vmlinux:34: vmlinux] Error 139
make[2]: *** [/kisskb/src/Makefile:1166: vmlinux] Error 2
make[1]: *** [/kisskb/src/Makefile:224: __sub-make] Error 2
make: *** [Makefile:224: __sub-make] Error 2
Command 'make -s -j 40 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mpc85xx_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  ' returned non-zero exit status 2.
# rm -rf /kisskb/build/powerpc-fixes_mpc85xx_defconfig_powerpc-gcc5
# Build took: 0:01:05.402136